#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
main() 
{
	int x = 1, y = 2, a = 3, b = 4;
	switch (x) {
	case 1:
		switch (y) {
		case 1:b++;

		case 2:a++;
			break;
		}
	case 2:
		++a;
		b++;
		break;
	case 3:
		a++;
		++b;
	}
	printf("a=%d,b=%d\n", a, b);
}